Sand-blast tumbling-barrel.



No. 702,040. Patented lune'lo, |902,l

B. 0. TILGHMAN, m. SAND BLAST TUMBLING BRREVL.

(Application filed Sept. 25, 1901.)

(N0 Model.)

UNITED STATES BENJAMINMC. TILGHMAN, JR., orv

PiI'ILAnLrHIA, PENNSYLVANIA.,

SAND-BLAST T U MBLINe-BARREL.

sisncrrrcnrrolv forming part of Leiters i l i l Patent-N0. '702,040, dated June 1,0, 1902.

f. Application,iiledseptemher 25.19011".l SerialNo..76|459. (o modelx...

To a/ZZ whom t may concern,.-

Be it known that I, BENJAMIN C.T1LGHMAN Jr., a citizen of the United States of America,- residing in the city and county of Philadel-- phia, in the State of ',Pennsylvania, have Ainvented certain new and usefullmprovements in Sand-Blast Tumbling-Barrels, Vof which the following is a trueand exact ,descrip'tiofmref erence being had to the accompanying draw;- ings, which form apart thereof. l Y My invention relates to sand-blast tumbling-barrels, and has for its object to provide a device of this .kind of increased etti' ciency and convenience of operation.

Among the leading features of my construc tion are, first, the use in combination with a barrel of two or more sandfblast nozzles supported outside of the barrel and directed at varying angles into the'interor of the barrel. 1 Second and most important is the construe-'- tion of the barrel in'ltwo `or more sections,Y preferably all revolving at equalspeed and having sand-blast nozzles supported so as tog direct the blast intoithe barrels through'the space interven-ing between adjacent sections.; By preferencealso I construct my sectional, barrels with annular stationary'rings" intern vening between the adjacent'ends ot{the`barrels, utilizing said ringswasa,support,for .the nozzles, which should be ,set at varying angles to avoidv interference Aof the different jets and7 `distribute them longitudinally over .the work in the barrel.

Other1 features of improvement will be pointed out in connectionw-ith the drawings E which illustrate my invention, and in Which- Figure l is a longitudinal section elevationV of a tumbling-barrel construction .involving my invention, consisting in this case of two? sections. Fig. 2 is a similar sectionaleleyaf` tion of a construction involving the fuse4 of three barrel-sections, and Fig. 3 is a crjossf vsectional view on the line 3 3 of Fig. 2.

A indicates the hxed support upon'fwhich the structure rests. As shown, this support` is provided Lwith upwardly-extending lugsA A at'its rearend, supporting'a pivot-shaft,l (indicated at C.)`

B B are the supports upon which thetfum-Y' bling-barrels rest, (shown as angleirons^`,`)l said supports being pivoted on the shaft Cat their rear ends. In the construction shown "in Fig. lthe su-pportingironsf-B have attached to their front ends downwardly-projecting perforated irons, (indicated at B,) through whichextends adjusting-screw D, by shifting the nuts `upon whiclia Wedge D 'isv adjusted between 'the f ront ends of the jironsfB and thesupport A, thus 'changing the angulanadjustments Aot' the supporting-irons and the'A structure yresting upon them. In Fig. 2 the adjusting-screw D passes through "a perforatedy braceTA2, secured to the base, l

and acts upon a toggle-joint (indicated at d) and having the same function of yadjusting the 'position of the angular irons B.

B2 B2, &c., are bearings supported on the irons, B and supporting the longitudinal shafts E. v 4. V- B3 B2 are supports-extending from the irons B and serving to sustain in position the noz,

zie-supporting device. lThesesupports also `lsupport-conveniently a bearing` or bearings for the shaft E, which1 serve to support and 'rotate theitumbling-barrel, and, as shown, lthe .sliaftsvzhaye also secured 'to their Ifrontends g'earwheels E2, by means` of whichfland vany convenientgtrainof gears they-canbe actu- ;'ated IlIn'litgn the gear-wheelEfalso serves toicomin'nnicate motion to a'zgear'wheel H19, which rotates ia..ca1nf(indica'ti-fadatH9) and Servinga'purpose tolb'ehereinaft'ef'explained.

F and F', Fig.i1f,-indicatejtwosections of the tumbling-barrehhere shown as vmadevup of 'perforated metal plates, indicatih'g'the per- V1forations. '-1' e InfFig. 2 three sections ofthe tumblingbarrel arelindicated at F2 F3 F4, the sections fF2 andFL being shown as non-perforated and .thevseletion' F3 made up of grate-like bars se- *c'ured-.tofannular rings at their ends. The lgr`ate-barsvare indicated at f3.

"G Grind-icate stationary annular rings intervening between adjacent sections of the tumbling-barrel. These rings, as before stated, are secured to the supportslB?, and'they serve 'as supportsgfor the san'dblastnoz'zles,"which iin-Figflare indicated at I and.I alsgdirected into the barrel-section F and at and 1l into the 'barrel-section F. In Fig.2`thenozz1es are shownfas secured `t'tlie"^front'ring G at` 1213 I4 4 Ifyhile similar nozzles secured to the .rearring Gry areshown at t2 z2 1.4 t5, and it will 4be clear from the showing `in Figs. 2 and 3 ICO that these nozzles are set at varying angles, so that the jets thrown by them will not interfere With each other and the sand-blast will be well distributed over the work in the barrel, such work being indicated at L, Fig. 3, Z indicating the surface, the barrel revolving in the direction of the hands of a watch, as shown by the hour. A

J5 J5 indicate feed -pipes leading to the nozzle.

H, Fig. l, indicates a work-receiving hopper at the front end ot the barrel, II indicating the position of the opening for charging. In Fig. 2 a somewhat different receiving-hopper isindicated at H2, the epeningbeing shown at H3, H4 indicating a movable bottom to the hopper secured on a pivoted shaft H5, having also secured to it a lever-arm h4, which by a connecting-rod H6 is secured to the upper free end of a lever H7, pivoted at HS and having a cam-roller 7t7 running in the cam H9.

L, Figs. l and 2, indicates a stationary shield at the end of the tumbling-barrel. In Fig. l this is shown with a delivering-spout L and in Fig. 2 with a receiving-section L2, having a door L3, pivoted at L4, by which the contents can be discharged at will.

K indicates a car for receiving the finished work.

J J, Fig. l, indicate casings surrounding perforated portions of the barrels F and F and communicating through hopper-bottoms J2 with space J3 and through pipes J4 with a suction-fan. (Not shown.) In Fig. 2 a similar casing is indicated at J with connections similar to those of the casings J J.

In operation the barrels are rotated by the action of the supporting-wheels E', driven by the shafts E. The material to be treated is fed into the front end of the barrel, and its speed of passage through the barrel will depend upon the speed of rotation and somewhat upon the angular inclination of the barrel and somewhat also upon the rapidity with which the material is fed to the barrel. It is quite important for the best results that the material should be fed to the barrel at a regular rate and preferably a rate which bears a definite ratio to the rotation of the barrel. In the construction shown in Fig. 2 I have provided for the intermittent dumping of material charged into the receptacle H2 bythe movements of the bottom H, which through the mechanism described is actuated in a definite ratio to the rotations of the barrel. The material is fed through the rst section, in which it may or may not be acted upon by the blast, and thence to the succeeding sections of the tumbling-barrel, and the blast is preferably introduced as shown' in the space between adjacent barrel ends and preferably through the stationary rings G,- which form a part of the barrel-conduit. The material of course is delivered to the rear end of the barrel either constantly or intermittently if a closed receptacle, such as L2, is used.

The sand and dirt which escape through the perforations in the barrel are collected in the chambers J, the heavierparticles passing over through the spouts J and the lighter particles being drawn over through the conduits J4.

My sectional barrel is especially important and valuable for the treatment of long and narrow devices, such as pipe sections, but the sectional arrangement is also desirable for all purposes, especially where it is desirable to pass a large quantity of work rapidly under the sand-blast.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In combination with a tumbling-barrel, a support for sand-blast nozzles situated outside of the barrel and two or more blast-nozzles secured to said support outside of the periphery of the barrel and directed at varying angles into the barrel.

2. In combination with a sectional tumbling barrel, means for revolving each section, sand-blast-nozzle supports situated between one or more ot' the sections of the barrel and blast-nozzles secured to said supports and directed into the barrel.

3. In combination with a sectional tumbling-barrel, means for revolving each section, sand-blast-nozzle supports situated between one or more of the sections of the barrel and blast-nozzles secured to said supports and directed at varying angles into the barrel.

4. In combination with a sectional tumbling-barrel, means for revolving each section, annular stationary rings situated between the barrel-sections and blast-nozzles secured to said rings and directed into the barrel.

5. Asectional tumbling-barrel having three sections, means for revolving said barrel-sections, supports for sand-blast nozzles, situated between two adjacent sections and blastnozzles secured to said supports and directed into the barrel.

6. A sectional tumbling-barrel having three sections, means for revolving said barrel-sections and sand-blast nozzles directed to act on the inside of the central barrel-section.

7. A sectional tumbling-barrel made up of two or more sections set in line in combination with means for revolving oncor more of the barrel-sections and sand-blast nozzles `directed into one or more of the revolving barrel-sections.

B. C. TILGHMAN, JR.

Witnesses:

CHAs. F. Mmes, D. STEWART.

IOO

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